超精密核时钟研究现状

A Review of Research Literature on Ultra-Precision Nuclear Clocks

基于原子核能级跃迁的高精度光学时钟--核钟的计时精度将优于当前的黄金计时标准--原子钟,相关研究具有重大的科学意义、重要的战略意义及推动社会发展的巨大潜力。首先,通过文献计量法梳理了2003年以来超精密钍核钟的发展历程。然后,利用科学知识图谱直观展示了目前核钟领域科研力量的宏观(国家)、中观(机构)、微观(人员)分布情况,主要研究方向及主要资助机构等情况,以期为我国相关地区或科研机构开展核钟研究提供信息支撑。

Nuclear clocks,the high-precision optical clocks based on nuclear energy level transitions,are deemed to have better timing accuracy than atomic clocks,the current gold timekeeping standard.Related research has great scientific and strategic significance for the development of our society.The development of ultra-precision thorium nuclear clocks since 2003 is investigated using the bibliometric method.Scientific knowledge maps are used to show the current macro(national-level),meso(institutional-level),and micro(personnel-level)distributions of research forces,main research topics,and main funding agencies in the field of nuclear clocks.